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210 lines
3.9 KiB
210 lines
3.9 KiB
package utils
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import (
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"fmt"
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"io"
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"log"
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"mime/multipart"
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"os"
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"reflect"
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"strconv"
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"strings"
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"time"
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)
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const (
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rolePrefix string = "role_"
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)
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// 将结构体内所有string类型字段去除首位空格
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// sp为结构体指针, s为结构体值
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func TrimStruct(sp interface{}, s interface{}) {
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// 判断类型是否为struct
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av := reflect.ValueOf(sp)
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avv := reflect.ValueOf(s)
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at := reflect.TypeOf(s)
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// 简单判断下
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if at.Kind() != reflect.Struct {
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log.Printf("s must be a struct")
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return
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}
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av = reflect.ValueOf(av.Interface())
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for i := 0; i < avv.NumField(); i++ {
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if at.Field(i).Type.Name() == "string" {
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f := av.Elem().Field(i)
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val := strings.TrimSpace(avv.Field(i).String())
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f.Set(reflect.ValueOf(val))
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}
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}
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return
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}
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//
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func FmtRolePrefix(sub interface{}) string {
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var s string
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switch sub.(type) {
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case int64:
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uid := sub.(int64)
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s = strconv.FormatInt(uid, 10)
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case string:
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s = sub.(string)
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}
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return fmt.Sprintf("%s%s", rolePrefix, s)
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}
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// timestamp to time
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func StampToTime(st int64) time.Time {
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return time.Unix(st / 1000, 0)
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}
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func IdsStrToIdsIntGroup(keys string) []int {
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IDS := make([]int, 0)
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ids := strings.Split(keys, ",")
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for i := 0; i < len(ids); i++ {
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ID:= ValueToInt(ids[i],0)
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IDS = append(IDS, ID)
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}
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return IDS
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}
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func IDsToStringIn(ids []int) string {
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ll := len(ids)
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var str string
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for i := 0; i < ll; i++ {
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if i > 0 {
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str = str + "," + ValueToString(ids[i], "")
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} else {
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str = ValueToString(ids[i], "")
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}
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}
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return str
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}
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func IDsToStrings(ids []string) string {
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ll := len(ids)
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var str string
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for i := 0; i < ll; i++ {
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if i > 0 {
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str = str + "','" + ValueToString(ids[i], "")
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} else {
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str = "'" + ValueToString(ids[i], "")
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}
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}
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if len(str) > 0 {
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str = str + "'"
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}
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return str
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}
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// SaveUploadedFile uploads the form file to specific dst.
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func SaveUploadedFile(file *multipart.FileHeader, dst string) error {
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src, err := file.Open()
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if err != nil {
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return err
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}
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defer src.Close()
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out, err := os.Create(dst)
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if err != nil {
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return err
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}
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defer out.Close()
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_, err = io.Copy(out, src)
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return err
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}
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func MakeOrderSn(key string) string {
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// 转大写
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key = strings.ToUpper(key)
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// 获取时间戳
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ts := time.Now().Format("20060102150405.000")
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tss := fmt.Sprint(time.Now().UnixNano())
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ts = string([]byte(ts)[0:14]) + string([]byte(tss)[13:16])
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return key + ts
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}
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//判断字符串是否在一个数组里
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func IsContain(items []string, item string) bool {
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for _, eachItem := range items {
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if eachItem == item {
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return true
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}
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}
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return false
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}
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// 是否是文件 不是文件也不一定是目录
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func IsFile(path string) bool {
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s, err := os.Stat(path)
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if err != nil {
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return false
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}
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return !s.IsDir()
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}
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//求并集
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func Union(slice1, slice2 []string) []string {
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m := make(map[string]int)
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for _, v := range slice1 {
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m[v]++
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}
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for _, v := range slice2 {
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times, _ := m[v]
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if times == 0 {
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slice1 = append(slice1, v)
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}
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}
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return slice1
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}
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//求交集
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func Intersect(slice1, slice2 []string) []string {
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m := make(map[string]int)
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nn := make([]string, 0)
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for _, v := range slice1 {
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m[v]++
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}
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for _, v := range slice2 {
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times, _ := m[v]
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if times == 1 {
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nn = append(nn, v)
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}
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}
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return nn
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}
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//求差集 slice1-并集
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func Difference(slice1, slice2 []string) []string {
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m := make(map[string]int)
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nn := make([]string, 0)
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inter := Intersect(slice1, slice2)
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for _, v := range inter {
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m[v]++
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}
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for _, value := range slice1 {
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times, _ := m[value]
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if times == 0 {
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nn = append(nn, value)
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}
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}
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return nn
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}
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// 将给定的整数值转换成给定长度的字符串，不足长度的在前面补足0
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func ConvInt2FormatString(input, ilen int)(retstring string){
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var igap int
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if len(string(input)) >= ilen {
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retstring = string(input)
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}else{
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igap = ilen - len(strconv.Itoa(input))
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retstring = strings.Repeat("0", igap) + strconv.Itoa(input)
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}
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return
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}
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